1) Which of the following elements is the most abundant in the Earth's crust? a) Iron b) Silicon c) Oxygen 2) What type of energy is considered the most renewable? a) Nuclear energy b) Solar energy c) Fossil energy 3) Which of the following gases is the most polluting for the environment? a) Carbon dioxide b) Oxygen c) Nitrogen 4) What type of water is the most healthy for human consumption? a) Mineral water b) Sea water c) Distilled water 5) What type of diet is considered the most balanced? a) Mediterranean die b) Vegetarian diet 6) Which of the following natural phenomena is the most destructive? a) Rain b) Earthquake 7) Which of the following planets is the most close to the Sun? a) Venus b) Mercury ( c) Mars 8) What type of cell is the most large in the human body? a) Ovum b) Muscle cell c) Red cell 9) Which of the following oceans is the most deep in the world? a) Pacific Ocean b) Indian Ocean c) Atlantic Ocean

DANIEL SUAREZ

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